Ferromagnetic resonance plays an important role in magnetism and even solid state physics. It is the basis of microwave ferrite physics. Microwave ferrite has been widely used in radar technology and microwave communication. Fd-fmr-a microwave ferromagnetic resonance experimental instrument produced by Shanghai Fudan Tianxin science and Education Instrument Co., Ltd. is a modern physical experimental instrument used to complete the experimental teaching of ferromagnetic resonance curve measurement of ferrite samples. It is mainly used to measure the resonance spectral lines of YIG single crystal and polycrystalline samples, measure g factor, spin magnetic ratio, resonance linewidth and relaxation time, and analyze the characteristics of microwave system. The instrument has the advantages of accurate measurement, stable and reliable, rich experimental content and so on. It can be used for senior physics students' professional experiments and modern physics experiments.
Experiments1. Observe microwave ferromagnetic resonance phenomena of ferromagnetic materials.
2. Measure ferromagnetic resonance line width (ΔH) of microwave ferrite materials.
3. Measure the Lande's g-factor of microwave ferrite.
4. Learn how to use a microwave experimental system.
* Some observed experimental results shown at left.
Specifications| Microwave System | |
| Sample | 2 ( mono-crystal and poly-crystal, one each) |
| Microwave frequency meter | range: 8.6 GHz ~ 9.6 GHz |
| Waveguide dimensions | inner: 22.86 mm × 10.16 mm (EIA: WR90 or IEC: R100) |
| Electromagnet | |
| Input voltage and accuracy | Max: ≥ 20 V, 1% ± 1 digit |
| Input current range and accuracy | 0 ~ 2.5 A, 1% ± 1 digit |
| Stability | ≤ 1x10-3+5 mA |
| Strength of magnetic field | 0 ~ 450 mT |
| Sweep Field | |
| Output voltage | ≥ 6 V |
| Output current range | 0.2 A ~ 0.7 A |
| Solid State Microwave Signal Source | |
| Frequency | 8.6 ~ 9.6 GHz |
| Frequency drift | ≤ ± 5×10-4/15 min |
| Working voltage | ~ 12 VDC |
| Output power | > 20 mW under equal amplitude mode |
| Operation mode & parameters | Equal amplitude |
| Internal square-wave modulation | |
| Description | Qty |
| Controller Unit | 1 |
| Electromagnet | 1 |
| Support Base | 3 |
| Microwave System | 1 set (including various microwave components, source, detector, etc) |
| Sample | 2 ( mono-crystal and poly-crystal, one each) |
| Cable | 1 set |
| Instructional Manual | 1 |